CN107091356B - A kind of relief valve - Google Patents
A kind of relief valve Download PDFInfo
- Publication number
- CN107091356B CN107091356B CN201710257394.2A CN201710257394A CN107091356B CN 107091356 B CN107091356 B CN 107091356B CN 201710257394 A CN201710257394 A CN 201710257394A CN 107091356 B CN107091356 B CN 107091356B
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- CN
- China
- Prior art keywords
- valve
- valve core
- spool
- taper
- sliding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of relief valves, including valve body, valve body is equipped with oil inlet passage, pressure release passage and the valve seat being arranged between two channels, the valve seat movement is corresponded in valve body is equipped with taper valve core, it is additionally provided on valve body for driving taper valve core to move so that taper valve core cooperatively forms the driving mechanism of different valve port openings in moving process from the valve seat, oil inlet passage is equipped with the on-off spool for controlling oil inlet passage conducting, disconnecting.When needing using the movement of taper valve core to carry out pressure release level adjustment, oil inlet passage is disconnected first with on-off spool, short time or instantaneous static environment can be formed, effectively reduce the pressure oil impact that taper valve core is subject to during the adjustment, it is easy to implement corresponding pressure release adjustment, can effectively ensure that pressure release Adjustment precision and regulated efficiency.
Description
Technical field
The present invention relates to a kind of relief valves.
Background technique
The synthesis device of China's diamond is cubic hinge press, which, which uses, is up to 100MPa or more,
Accordingly it is equipped with a set of Superhigh Pressure Hydraulic System.Superhigh Pressure Hydraulic System main function is to provide high pressure in hydraulic press pressing process
Hydraulic oil, and pressure is kept during diamond synthesizing, hydraulic system is needed pressure off-load to the left side 6MPa after synthesis
A duty cycle is so far completed on the right side.
In the unloading process of hydraulic system, pressure release speed and pressure release control precision are most important to the synthesis of diamond,
Pressure release control is improper to will cause serious consequence, for example blows out, splits hammer and influence the production and stability of diamond.People
The synthesis technology of diamond, the especially decompression technique of synthetic gem grade diamond are made, to the controllability of pressure release curve, flat
Stability requires high.Oil cylinder working-pressure drops to pressure release fluctuation within the scope of 10MPa and pressure release curve deviation will from 100MPa pressure release
≤0.2MPa.Currently, the use of cubic hinge press pressure relief system is three-level relief valve mostly, existing three-level pressure-relief valve uses three-level
Spool controls release, and release spool each time is made to provide the pressure release control within the scope of about 30MPa.Different spool apertures is corresponding
Different liquid dampings still provides three kinds of different liquid dampings by three-level different opening spool to control pressure release, not can guarantee
The precision of pressure release, be easy to cause pressure release to fluctuate.By experimental results demonstrate a liquid damps the vent pressure range that can be controlled
About within 5MPa.Briefly, the fixed aperture of a spool is wanted to reach ideal pressure release control precision, corresponding pressure
Power range is about in 5MPa or so.If it is required that relief valve meets the pressure release required precision of bulky grain gem-quality diamond,
Then need about 19 grades or so, this be just bound to cause pressure-relief valve structure complexity, manufacture and debugging, maintenance cost it is excessively high.
A kind of super-pressure pressure-relief valve is disclosed in the Chinese utility model patent that Authorization Notice No. is CN202392124U,
Including valve body, valve body is imported and exported equipped with liquid medium, and conical surface pad is equipped in valve body, and conical surface pad is equipped with to be situated between for being connected to liquid
The fluid channel of matter inlet and outlet, mobile in valve body to be equipped with control valve rod, control valve rod has logical with the fluid on conical surface pad
The one end in road corresponds to inserting to form the cone of cone valve sealing, and control valve rod is hydraulically operated power drive to closing fluid channel
Direction is mobile, when hydraulic-driven power reduces, is opened by the liquid medium entered through liquid medium entrance, so, can be led to
The opening size of the size control cone of control hydraulic-driven power is crossed, and then realizes control release.In the prior art, it is driven to simplify
The mechanism of dynamic control valve rod movement is also had and is acted using servo motor come pushing tow valve rod.When by above-mentioned pressure-relief valve concrete application
There are problems when on cubic hinge press: cubic hinge press matched hydraulic system pressure up to 100MPa, when higher
When carrying out pressure release adjustment under pressure condition, since medium pressure liquid acts directly on control valve rod, it is accurate adjust resistance compared with
Greatly, adjustment effect is poor, and pressure release fluctuation is larger, moreover, the dynamic adjustment in high pressure will affect the service life of pressure-relief valve.
Summary of the invention
The purpose of the present invention is to provide a kind of relief valves, are directly acted on solving medium pressure liquid in the prior art
Pressure release at higher pressures is caused accurately to adjust the larger technical problem of resistance on control valve rod.
To achieve the above object, the technical solution of relief valve provided by the present invention is: a kind of relief valve, including valve body,
Valve body is equipped with oil inlet passage, pressure release passage and the valve seat being arranged between two channels, and the mobile dress of the valve seat is corresponded in valve body
Equipped with taper valve core, be additionally provided on valve body for drive taper valve core move so that taper valve core in moving process with it is described
Valve seat cooperatively forms the driving mechanism of different valve port openings, and the oil inlet passage, which is equipped with, leads switching for controlling oil inlet passage
The on-off spool opened.
The on-off spool is to move back and forth the sliding valve core being assemblied in the valve body, has on sliding valve core and blocks knot
Structure and connectivity structure, sliding valve core have the closure working position for being blocked by plugging structure and disconnecting oil inlet passage on its shift motion
It is connected to oil inlet passage with by connectivity structure the ON operation position of oil inlet passage is connected.
Connectivity structure on the sliding valve core is the connection annular groove on the sliding valve core outer peripheral surface.
Plugging structure on the sliding valve core is to be located at outside the closure of the connection annular groove side on the sliding valve core
Circumferential surface.
The sliding valve core sealing movement is assemblied in the sliding inner cavity that the valve body is equipped with, and sliding inner cavity includes along cunning
Movable valve plug glide direction is located at two mobile control chambers of the sliding valve core two sides.
It is equipped with valve rod along the taper valve core moving direction guiding movement in the valve body, the taper valve core is located at institute
Valve rod respective end is stated, the driving mechanism includes servo motor and spool mandril, and servo motor is driven by leadscrew-nut mechanism
It moves the spool mandril to move back and forth along the taper valve core moving direction, the spool mandril has for valve rod described in pushing tow
With the taper valve core pushing end mobile towards the direction for closing corresponding valve port.
The servo motor passes through connecting flange together with the valve body fixing assembling, the spool mandril guiding movement
It is assemblied on the connecting flange.
The beneficial effects of the present invention are: in relief valve provided by the present invention, be equipped on oil inlet passage for control into
Oily channel conductive, disconnection on-off spool so needing the mobile carry out pressure release level adjustment using taper valve core
When, oil inlet passage is disconnected first with on-off spool, short time or instantaneous static environment can be formed, taper valve core is effectively reduced and exist
The pressure oil impact being subject to during adjustment is easy to implement corresponding pressure release adjustment, can effectively ensure that pressure release Adjustment precision and tune
Whole efficiency.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of embodiment of relief valve provided by the present invention；
Fig. 2 be Fig. 1 shown in relief valve oil inlet passage on be arranged sliding valve core structural schematic diagram (sliding valve core be in lead
Logical working position)；
Fig. 3 is schematic diagram when sliding valve core shown in Fig. 2 is in closure working position.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment of relief valve provided by the present invention, as shown in Figure 1 to Figure 3, the relief valve packet in the embodiment
Valve body 7 is included, valve body 7 is equipped with oil inlet passage P, pressure release passage T and the valve seat being arranged between two channels, seals and move in valve body 7
Dynamic to be equipped with valve rod, valve rod is equipped with corresponding valve stem packing ring 5, and the respective end of valve rod is equipped with cone valve corresponding with valve seat
Core 6, in valve rod in 6 reciprocating movement of taper valve core, so that taper valve core 6 can cooperate with corresponding valve seat to form difference
Valve port opening, corresponding different pressure release class requirement.
The driving mechanism moved back and forth for driving stem together with taper valve core is additionally provided on valve body 7, driving mechanism is specific
Including servo motor 1, for servo motor 1 through connecting flange 2 together with 7 fixing assembling of valve body, connecting flange 2 passes through fastening spiral shell
Nail 3 and 7 fixing assembling of valve body, are equipped with spool mandril 4, spool along taper valve core moving direction guiding movement on connecting flange 2
Mandril 4 is driven by leadscrew-nut mechanism by servo motor 1 and is moved back and forth, also, spool mandril 4 has for pushing tow valve rod band
The taper valve core pushing end mobile towards the direction for closing corresponding valve port.
In the present embodiment, drive 4 pushing tow valve rod of spool mandril with taper valve core 6 to valve port opening by servo motor 1
Reduced direction is mobile, and when needing to expand valve port opening, servo motor 1 is rotated backward, and drives valve by leadscrew-nut mechanism
Core mandril 4 moves backward, the direction movement that taper valve core 6 then increases under the action of oil pressure and spring towards valve port opening, real
The adjustment of existing valve port opening, meets different pressure release class requirements.
If only relying on the movement of taper valve core when hydraulic pressure is larger, to adjust resistance phase when realizing pressure release adjustment
To larger, reciprocal to adjust bring pressure release fluctuation larger, influences pressure release Adjustment precision and regulated efficiency, to overcome the problems, such as this, this
In embodiment, be equipped on oil inlet passage P for oil inlet passage conducting, the on-off spool that disconnects, when needing to carry out pressure release adjustment
When, oil inlet passage can be disconnected by on-off spool, short time or instantaneous static environment can be formed, be easy to implement corresponding pressure release tune
It is whole, it can effectively ensure that pressure release Adjustment precision and regulated efficiency.
Specifically, it is corresponded on valve body 7 and is equipped with sliding inner cavity at a straightway of oil inlet passage, on-off spool is sliding
The sliding valve core 10 being assemblied in sliding inner cavity, sliding inner cavity includes being located at 10 liang of sliding valve core along 10 glide direction of sliding valve core
The mobile control chamber of the two of side, two mobile control chambers are left control chamber A and right control chamber B, by being filled with liquid into different control chambers
Pressure oil drives sliding valve core back and forth moving left and right in sliding inner cavity.
There is plugging structure and connectivity structure, sliding valve core has on its shift motion by plugging structure on sliding valve core
It blocks the closure working position for disconnecting oil inlet passage and is connected to by connectivity structure with oil inlet passage the conducting work of oil inlet passage is connected
Make position, connectivity structure herein is specially the connection annular groove 11 on sliding valve core outer peripheral surface, and plugging structure is specially slide-valve
It is located at the closure outer peripheral surface of 11 side of connected ring slot on core 10.
In use, sliding valve core 10 is moved to closure working position to the right when being filled with hydraulic oil in control chamber A to the left,
Closure outer peripheral surface on sliding valve core 10, which blocks, disconnects oil inlet passage P.When control chamber B is filled with hydraulic oil to the right, sliding valve core
10 are moved to the left ON operation position, and the connection annular groove 11 on sliding valve core 10 is connected to oil inlet passage P oil inlet passage is connected.
Relief valve provided by the present embodiment is when carrying out pressure discharge operations, when needs are in the higher situation of hydraulic fluid pressure
When carrying out pressure release level adjustment, it can first drive sliding valve core mobile to disconnect oil inlet passage, at this point, the short time or instantaneous can be formed
Static environment, facilitate driving mechanisms control taper valve core mobile to realize the adjusting to valve port opening, be easy to implement corresponding
Pressure release adjustment, adjustment is light, and pressure release Adjustment precision is good, high-efficient.
After the completion of adjustment, driving sliding valve core is moved to ON operation position, oil inlet passage normally, hydraulic oil pass through into
The pressure reduction after the valve port at valve seat of oily channel, is finally discharged through pressure release passage T.
In the present embodiment, corresponding different pressure limit adjusts corresponding valve port opening, to meet corresponding pressure release speed
It is required that.In the present embodiment, a valve port opening actually corresponding pressure release range within 5MPa, it is desirable to guarantee pressure release precision,
With regard to needing to decline with pressure, valve port opening is constantly adjusted.
The effect of on-off spool in cone valve previous stage is to control oil circuit on-off by spool on-off, set
Valve port opening under, pressure release speed is also adjusted by control on-off frequency, and when requiring pressure release fast speed, can only be passed through
Different pressures end adjusts valve port opening to control pressure release precision, in large single crystal synthesis, pressure release speed is needed to be maintained at 0.1MPa/
S and it is following when, can be control valve port opening under the premise of, the on-off frequency for controlling on-off spool guarantees pressure release speed.
In the present embodiment, on-off spool uses sliding valve core, and utilizes the control chamber realization pair for being located at sliding valve core two sides
The mobile control of sliding valve core, control is accurate, easy to operate.In other embodiments, the control of other driving structures can also be used
The reciprocating movement of sliding valve core, such as electric pushrod or piston cylinder driving structure.
In the present embodiment, the connectivity structure on sliding valve core is connection annular groove, convenient on the basis of guaranteeing effectively connection
Processing.In other embodiments, the connectivity structure on sliding valve core can also be radial communication hole.
In the present embodiment, on-off spool is sliding valve core, easy to control.In other embodiments, on-off spool can also be adopted
With ball valve, pass through conducting, the disconnection of the rotation control oil inlet passage of spherical valve core on ball valve.
In the present embodiment, taper valve core is located at the side towards pressure release passage of valve seat, so, by spool mandril top
It is mobile towards the direction that valve port opening reduces to push away taper valve core.In other embodiments, taper valve core can also be the court with valve seat
To the side of oil inlet passage, at this point, taper valve core configuration spring can be corresponded to, spring forces taper valve core to taper valve core application
The direction reduced towards valve port opening is mobile, and applies broken thing taper valve core towards valve port opening from spool mandril to taper valve core
The direction of increase is mobile.
Claims (7)
1. a kind of relief valve, including valve body, valve body is equipped with oil inlet passage, pressure release passage and the valve being arranged between two channels
Seat correspond to the valve seat movement in valve body and is equipped with taper valve core, be additionally provided on valve body for driving taper valve core movement so that
Obtain the driving mechanism that taper valve core cooperatively forms different valve port openings in moving process from the valve seat, it is characterised in that: institute
It states oil inlet passage and is equipped with the on-off spool for being connected, disconnecting for controlling oil inlet passage；Needing the movement using taper valve core
When carrying out pressure release level adjustment, oil inlet passage is disconnected first with the on-off spool, forms short time or instantaneous static environment,
The pressure oil impact that taper valve core is subject to during the adjustment is effectively reduced, corresponding pressure release adjustment is easy to implement.
2. relief valve according to claim 1, it is characterised in that: the on-off spool is to move back and forth to be assemblied in the valve
Sliding valve core in body, has plugging structure and connectivity structure on sliding valve core, sliding valve core have on its shift motion by
Plugging structure blocks the closure working position for disconnecting oil inlet passage and is connected to by connectivity structure with oil inlet passage oil inlet passage is connected
ON operation position.
3. relief valve according to claim 2, it is characterised in that: the connectivity structure on the sliding valve core is the sliding
Connection annular groove on spool outer peripheral surface.
4. relief valve according to claim 3, it is characterised in that: the plugging structure on the sliding valve core is the sliding
It is located at the closure outer peripheral surface of the connection annular groove side on spool.
5. relief valve according to claim 2, it is characterised in that: the sliding valve core sealing movement is assemblied in the valve body
In the sliding inner cavity being equipped with, sliding inner cavity includes being located at the two of the sliding valve core two sides along sliding valve core glide direction to move
Control chamber.
6. relief valve as claimed in any of claims 1 to 5, it is characterised in that: along the taper in the valve body
Spool moving direction guiding movement is equipped with valve rod, and the taper valve core is located at the valve rod respective end, the driving mechanism
Including servo motor and spool mandril, servo motor drives the spool mandril along the taper valve core by leadscrew-nut mechanism
Moving direction moves back and forth, and the spool mandril, which has, closes corresponding valve port with taper valve core direction for valve rod described in pushing tow
The mobile pushing end in direction.
7. relief valve according to claim 6, it is characterised in that: the servo motor passes through connecting flange and the valve body
Together, the spool mandril guiding movement is assemblied on the connecting flange fixing assembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710257394.2A CN107091356B (en) | 2017-04-19 | 2017-04-19 | A kind of relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710257394.2A CN107091356B (en) | 2017-04-19 | 2017-04-19 | A kind of relief valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107091356A CN107091356A (en) | 2017-08-25 |
| CN107091356B true CN107091356B (en) | 2019-03-22 |
Family
ID=59637030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710257394.2A Active CN107091356B (en) | 2017-04-19 | 2017-04-19 | A kind of relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107091356B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7147205B1 (en) * | 2004-06-16 | 2006-12-12 | Sandia Corporation | Low energy high pressure miniature screw valve |
| CN101403443A (en) * | 2008-10-23 | 2009-04-08 | 中国农业大学 | Automatic pressure relief valve for ultra-high pressure equipment |
| CN201575212U (en) * | 2009-12-31 | 2010-09-08 | 山西三水银河科技有限公司 | Integrated ultra-high pressure unloading valve |
| CN203940009U (en) * | 2014-07-21 | 2014-11-12 | 太原市鸿煷机械设备有限公司 | Ultrahigh pressure Decompression valves |
| CN205938016U (en) * | 2016-08-15 | 2017-02-08 | 郑州磨料磨具磨削研究所有限公司 | Servo relief valve of superhigh pressure |
-
2017
- 2017-04-19 CN CN201710257394.2A patent/CN107091356B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7147205B1 (en) * | 2004-06-16 | 2006-12-12 | Sandia Corporation | Low energy high pressure miniature screw valve |
| CN101403443A (en) * | 2008-10-23 | 2009-04-08 | 中国农业大学 | Automatic pressure relief valve for ultra-high pressure equipment |
| CN201575212U (en) * | 2009-12-31 | 2010-09-08 | 山西三水银河科技有限公司 | Integrated ultra-high pressure unloading valve |
| CN203940009U (en) * | 2014-07-21 | 2014-11-12 | 太原市鸿煷机械设备有限公司 | Ultrahigh pressure Decompression valves |
| CN205938016U (en) * | 2016-08-15 | 2017-02-08 | 郑州磨料磨具磨削研究所有限公司 | Servo relief valve of superhigh pressure |
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| Publication number | Publication date |
|---|---|
| CN107091356A (en) | 2017-08-25 |
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